import { Checkbox } from "antd"; type CheckboxProps = React.ComponentProps<typeof Checkbox>; type My

// tsx 中需要加多个 , 或者 extends，否则会识别成 react 的标签 const fn = <T>(p: T): T => { return p; }; const fn2 =

type Person = { name: string; age: number; schools: { id: string }[] }; type PersonSchool = Person["

const person = { name: "lhh", age: "18" }; type PersonKey = keyof typeof person; type Person = { [ke

/** 将类型的所有可选属性（包括嵌套的，同时移除null）都转化为必选 */ type DeepRequired<T> = { [P in keyof T]-?: T[P] extends ob

type RequireKey<T, K extends keyof T> = Omit<T, K> & { [P in K]-?: T[P] }; // type RequireKey2<T, K

type WithPartial<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>; type Person = { id: str

映射属性，即下面属性全部映射为 stringtype PersonKey = "name" | "age"; type PersonType = Record<PersonKey, string>;

type PersonType = { name: string; age: string; }; type PersonType2 = Partial<PersonType>; type _

type T1 = Extract<"a" | "b" | "c", "a" | "f">; type T11 = "a"; // 等效于 type T2 = Exclude<"a" | "b" |